Evancho, who wears star-spangled banner as her dress, will visit Tribeca Prep to sing at their "Spirit of America Play." Jennifer Stone's Harper, who dresses up as a cactus, will also be taking the stage for the first time. Jackie gives Harper a run for her money.

Meanwhile, Alex and Justin have to figure out how to change Max back after turning him into a little girl. "Back to Max" airs March 11.